【発明の詳細な説明】本発明は例えばシンチレーションカメラと共に使用され
るコリメータの微細なハニカム構造体の製造方法に関し
、詳細には焦点を有するハニカム構造体の製造に用いる
素材に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a fine honeycomb structure of a collimator used, for example, with a scintillation camera, and in particular to a material used for manufacturing a honeycomb structure with a focal point.
シンチレーションカメラ用コリメータは空間的に分布す
る放射性同位元素から放出される放射線の内、所望の方
向を有するもののみ通過させるためのものであり、一般
にはその放射線に対して不透明な、比重と原子番号の大
きい材料、特に加工の容易さと経済性の点から鉛または
鉛合金のゾロツクを用い、それに微細な直線孔を設けて
形成されている。微細な孔を高密度で均一に機械加工に
より設けることは極めて困難であるから、それらの形成
は適当な形状の波形鉛または鉛合金の板を冶金的に接合
して行うか、あるいは鉛または鉛合金の薄板を外被とし
、それよりも特定の化学薬品等に対して溶解し易い例え
ばアルミニウム材料を芯材とした線材を適当な長さに切
りそろえ、それらを結束、整列させて適当に隣接線材を
接合させた後、芯材のみを適当に溶解除去して行うのが
一般的となりつつある。しかしながら１例えば波形鉛板
を用いるものにあっては接合部分に空隙が生じ易く、こ
れにより放射線の漏洩の問題が生じる上に極めて薄い鉛
板を用いる関係上、製造自体が比較的困難である。他方
複合線を用いる方法では比較的高価となるばかりでなく
、′ｒ５材の溶解作業が不可欠であるが、これは比較的
複雑であると共にその後の廃液処理等困難が附随する。A collimator for a scintillation camera is used to pass only radiation emitted from spatially distributed radioactive isotopes in a desired direction, and in general, the collimator is a collimator that is opaque to the radiation, such as specific gravity and atomic number. It is formed by using a large material, especially lead or lead alloy porcelain from the viewpoint of ease of processing and economy, and providing fine straight holes in it. It is extremely difficult to create fine holes uniformly and densely by machining, so they are formed by metallurgically joining corrugated lead or lead alloy plates of appropriate shapes, or Wire rods with a thin alloy plate as the outer sheath and a core made of, for example, aluminum material, which is more easily soluble in certain chemicals, etc., are cut into appropriate lengths, tied and aligned, and then appropriately connected to the adjacent wire rods. It is becoming common practice to properly melt and remove only the core material after joining the two. However, if a corrugated lead plate is used, for example, voids are likely to be formed at the joint, which causes a problem of radiation leakage, and because the lead plate is extremely thin, manufacturing itself is relatively difficult. On the other hand, the method using a composite wire is not only relatively expensive, but also requires the operation of melting the 'r5 material, which is relatively complicated and is accompanied by difficulties such as subsequent waste liquid treatment.
本発明の目的は放射線の漏洩の問題がなく、しかも芯材
溶解の必要性がないにも拘らず安価であり且つ従来の複
合線を用いると同等の高精度のハニカム構造体な製造す
ることの出来る素材を提供することである。The purpose of the present invention is to manufacture a honeycomb structure that is inexpensive and has the same high precision as conventional composite wire, without the problem of radiation leakage and without the need to melt the core material. Our goal is to provide the materials we can.
以下図面にもとづき本発明の一実施例を説明する。An embodiment of the present invention will be described below based on the drawings.
第１図は本発明によるハニカム構造体用素材の一例の部
分断面図である。第１図において１例えば六角断面を有
する１例えば塩化ビニル、ポリエチレン等の、対象とす
る例えばガンマ線のような放射線に対してそれを吸収し
にくいプラスチック材料からなる芯材１を準備し、それ
に薄い鉛または鉛合金の壁２を適当に形成して本発明の
素材を形成する。この例においては鉛または鉛合金の壁
の厚さは約０．２ｍｌであり、これは硬質塩化ビニール
の芯材１に対し鉛または鉛合金を押出し被覆させて形成
している。FIG. 1 is a partial cross-sectional view of an example of a raw material for a honeycomb structure according to the present invention. In Fig. 1, a core material 1 made of a plastic material having a hexagonal cross section, such as vinyl chloride, polyethylene, etc., which is difficult to absorb radiation such as gamma rays, is prepared, and a thin lead material 1 is prepared. Alternatively, the material of the present invention is formed by appropriately forming the wall 2 of a lead alloy. In this example, the wall thickness of lead or lead alloy is approximately 0.2 ml, and is formed by extrusion coating lead or lead alloy onto a core material 1 made of hard vinyl chloride.
第２図はこの素材を用いたハニカム構造体の一部の上面
図である。すなわち１本発明により準備された素材を適
当な長さに切断した後、それらを整列させて適当な接着
剤を用いて一体化させたものである。FIG. 2 is a top view of a portion of a honeycomb structure using this material. That is, after cutting the materials prepared according to the present invention into appropriate lengths, they are aligned and integrated using a suitable adhesive.
本発明の素材を用いた場合には従来の複合線を用いた場
合に必要な芯材の溶解処理が全く不要となる。更に芯材
自体が安価であるから経済的にも有利であり、従って高
精度のコリメータが極めて容易に製造出来る。なお、：
ｒ５材として用いられる材料は塩化ビニール、ポリエチ
レン等に限らず。When the material of the present invention is used, there is no need for melting the core material, which is required when using conventional composite wires. Furthermore, since the core material itself is inexpensive, it is economically advantageous, and therefore a highly accurate collimator can be manufactured extremely easily. In addition,:
Materials used as R5 materials are not limited to vinyl chloride, polyethylene, etc.
対象とする放射線に対して比較的透明であり且つ適度の
剛性を有するものであれば任意である。また素材の断面
形状は六角に限られることなく、任意である。Any material can be used as long as it is relatively transparent to the target radiation and has appropriate rigidity. Further, the cross-sectional shape of the material is not limited to a hexagonal shape, but may be arbitrary.
第１図は本発明による素材の部分断面図、第２図は本発
明の素材を用いたハニカム構造体の一部の上面図である
。１・・・芯材 ２・・・鉛または鉛合金被覆７１
口す２ 図FIG. 1 is a partial sectional view of a material according to the present invention, and FIG. 2 is a top view of a portion of a honeycomb structure using the material of the present invention. 1... Core material 2... Lead or lead alloy coating 71
Mouth 2 figure
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56143227AJPS5845584A (en) | 1981-09-11 | 1981-09-11 | Honeycomb structure material for collimator |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56143227AJPS5845584A (en) | 1981-09-11 | 1981-09-11 | Honeycomb structure material for collimator |
| Publication Number | Publication Date |
|---|---|
| JPS5845584Atrue JPS5845584A (en) | 1983-03-16 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56143227APendingJPS5845584A (en) | 1981-09-11 | 1981-09-11 | Honeycomb structure material for collimator |
| Country | Link |
|---|---|
| JP (1) | JPS5845584A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2567276A1 (en)* | 1984-07-06 | 1986-01-10 | Labo Electronique Physique | IMPROVEMENT TO A CAMERA FOR DETECTION OF X AND G RADIATIONS, CAMERA WHOSE SCINTILLATOR BLOCK HAS AN INPUT WINDOW FORMED OF A STRUCTURE-SUPPORT MECHANICALLY RIGID AND VERY LOW ABSORBENT TO THESE RADIATIONS |
| WO2012081376A1 (en)* | 2010-12-14 | 2012-06-21 | 富士フイルム株式会社 | Grids for radiography and radiography system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2567276A1 (en)* | 1984-07-06 | 1986-01-10 | Labo Electronique Physique | IMPROVEMENT TO A CAMERA FOR DETECTION OF X AND G RADIATIONS, CAMERA WHOSE SCINTILLATOR BLOCK HAS AN INPUT WINDOW FORMED OF A STRUCTURE-SUPPORT MECHANICALLY RIGID AND VERY LOW ABSORBENT TO THESE RADIATIONS |
| WO2012081376A1 (en)* | 2010-12-14 | 2012-06-21 | 富士フイルム株式会社 | Grids for radiography and radiography system |
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